Apparatus for inducing artificial respiration.



N0. 659,'5|2. Patented 00L 9, I900. E. L. DOYEIL.

APPARATUS FOR INDU'CING ARTIFICIAL RESPIB'ATION.

(Application flled- In. 31, 1898.)

(No lludal.)

D A W wif/zeasas yexre z j/el ilurrn ATENT OFFICE.

EUGENE LOUIS DOYEN, OF PARIS, FRANCE.

APPARATUS FOR INDUCING ARTlFlCIAL RESPIRATION.

SPECIFICATION forming part of Letters Patent N0. 659,512, dated October 9, 1900. Application filed January 31, 1898. serial No. 668,634. (No model.)

To ctZZ whmn it may concern.-

Be itknown that I, EUGENE LOUIS DOYEN, surgeon, a citizen of France, residing at Paris, France, have invented certain new and useful Improvements in Apparatus for Inducing Artificial Respiration, of which the following is a specification.

This invention relates to an apparatus for inducing artificial respiration; and it consists of a double-chambered bellows provided with a rotary distributing-valve, which permits the lungs to be inflated with oxygen (from a suitable vessel or reservoir) or deflated and the vitiated air ejected therefrom.

In order that my invention may be well understood, I will describe the same with reference to the accompanying drawings, in which Figure l is a side elevation of the apparatus, partly broken away and part in section. Fig. 2 is a plan view of the apparatus. Fig. 3 shows, on an enlarged scale, the inner side of the lower plate, with a cross-section of the distributing-valve and means by which the three lower tubes of the valve are connected to the bellows. Fig. 4 is a front view of said distributing-valve. Fig. 5 is a horizontal section through the axle of the same. Figs. 6 and 7 are sections through line X X of Fig. 5, showing the connections between the apertures of the valve when the outer disk is placed in its two operative positions. Fig. 8 shows in detail the link through which the distributing-valve is actuated;

The bellows consists of two plates (1 and b, pivotally connected by a strong metal hinge c and entirely joined to one another by the usual flexible sides or leathers. These bellows are divided into two compartments I and II by means of a longitudinal diaphragm d, of supple material, which is placed in the median plane of the apparatus and perpendicular to the hinge c and which is connected to the plates at and l) by wooden strips d, as shown in Fig. 1.

e is the distributing-valve, which consists of two metal disksf and g, mounted upon a spindle h, supported by a bracket 6, which is fixed to the plate I). The inner disk f, Figs. 3 and 5, is provided with five openings 0 1 2 3 4, Figs. 4, 6, and 7. The aperture 0 communicates by a flexible pipe 2' with an oxygen-reservoir. (Not shown.) The openings l and 3 are respectively connected with the compartments I and II of the bellows by means of channels 1 and 3 provided in the plate b. The aperture 2 communicates by means of a channel 2, provided in the plate I), (compartment 1,) and a flexible tube is with an aperture m of the plate a, which aperture may be connected by any suitable tubing to the lungs to be inflated and deflated. The aperture 4 is in connection with the atmosphere through a tube 4, Fig. 3. The diskf is fixed to the valve-casing. The movable disk g moves easily on the front of the disk f, being keyed on the valve-spindle h, and has two segmental grooves 13 q.

Around about the upper half of the diskf is placed a spring 1', in the middle part of which engages a shoulder or pin 3, which is at right angles to an arm 15, keyed on the spindle h in front of the disk 9. On the same spindle h and at right angles to the arm tis keyed another arm a, which engages in a link c, Fig. 1. It will be easily understood that if the arm it is put out of its normal position of equilibrium (shown in Fig. 4) and is moved to the position in Fig. 6 or Fig. 7 it will'come back to its normal position, as well as the disk g, keyed on the spindle h, said arm being always drawn back by the tension of one or the other half of the spring 7' acting through the arm 25.

It will be seen that in the normal position of the distributing-valve there is no communication between the apertures 0 1 2 3 4 corresponding to the normal position of the arms t and a, whereas by moving the arm u thirty degrees above or below said position one of the two connections illustrated in Figs. 6 and 7 will be obtained. These movements are produced automatically through the slotted link 21 by merely operating the handles of the bellows, said link being attached to the plate a and engaged with the arm to.

The variations in the position of the distributing-valve e are made at the end of each stroke of the bellows, as is clearly shown in Fig. 8, where the positions of the arm a are illustrated indiagram, the movable disk g being drawn back to its original position when the arm a is engaged in one of the cam-slots provided at the ends of the link 1).

If the arm a were not replaced at the end of each stroke of the bellows by the spring 7",

which acts upon the arm 6, this arm '11. would remain in the position which it occupied during the preceding stroke. in this case the distributing-valve would not be reversed nor would the arm to abut against the inner wall of the link i), and consequently the working of the apparatus would not be continued. To avoid this, it is necessary to draw back the arm '16 at the end of each stroke, as by means of the spring 1'.

This apparatus operates in the followingdescribed manner:

First. The bellows are opened. Duringthis movement the distributing-valve is set in position shown in Fig. 6, wherein the apertures 0 and 1, 2, and 3 are set in communication. The oxygen-reservoir (not shown) is therefore in communication with the compartment I of the bellows, which is filled with this gas. The compartment II communicates, by means of the channels 3' and 2 and the flexible pipe is, with the lungs to be deflated.

Second. The bellows are closed. The arm a has now placed the distributing-valve in the position shown by Fig. 7, whereby the apertures 1 and 2, 3, and 4 are in connection. The compartment Icommnnicates, by means of the channels 1", with the lungs which are inflated with oxygen. At the same time the vitiated air contained in the compartment II is expelled, this compartment being in communication with the atmosphere through the pipes 3"and 4'.

- The same apparatus may be used merely to inflate the lungs or merely to deflate them, without inducing artificial breathing. For this purpose two otheropenings 5 6 are made in the plate (L, as illustrated in dotted lines, Fig. 2. One of these openings may have a suction-valve and the other an outlet-valve. (Not shown.) The openings 5 and 6 are covered by a disk 7, pivotally mounted on the axis 8, which closes both openings 5 and 6 when the apparatus is used in the manner hereinbefore explained; but when the apparatus is used as on ordinary bellows the link '0 must be swung outward on its hinge, so that the distributing-valve e will remain always in its central or inoperative position. Then the disk 7 is turned so that it closes the aperture m and opens apertures 5 and 6. At the same time the rotation of the disk 7 has carried away a little movable part d of the diaphragm d to put the two chambers I and II in communication with one another. It will be understood that the diaphragm d is cut away at one point and the aperture filled by a portion (1 above mentioned, carried by the stem of the disk 7 and moving therewith to put the chambers I and II in communication or close them to each other.

There remains now only to connect the one or the other of the apertures 5. and 6 with the lungs, according to whether the lungs shall be deflated or inflated.

This apparatus will be found useful in cases of drowning or asphyxiation.

Having now described my invention, what I claim is 1. In a device of the character described, the combination with a double-chambered bellows, of a distributing-valve adapted to communicate with either chamber of said bellows and consisting of two disks and a valvespindle, one of said disks being fixed and provided with a number of apertures while the other is mounted on the valve-spindle to move therewith and is provided with grooves to communicate with apertures of the fixed disk, a spring normally acting on the movable disk, and means actuated by the bellows tor operating said movable disk to put it into communication with one or the other of the bellows-chambers, as set forth.

2. In a device of the character described, the combination with a double-chambered bellows, of a distributing-valve consisting of a valve-spindle and two disks, one grooved and movable with said spindle and the other provided with apertures to be connected by the grooves of the other disk, two arms on the valve-spindle, a spring acting on one of said arms to normally hold the movable disk, and a link actuated by said bellows and having a cam-slot to be engaged with one of said arms to control the movement of the distributingvalve, as set forth.

3. In a device of the character described, the combination with a double-chambered bellows, of a distributing-valve adapted to communicate with either chamber of said bellows and consisting of a fixed disk and a movable disk provided with a spindle, the fixed disk being provided with a number of apertures and the movable disk being provided with grooves to connect the apertures of the fixed disk, two arms on the valve-spindle, one of which is connected with a spring acting to normally hold the movable disk, and a link hinged to one of the plates of the bellows and having a cam-slot to act on the other one of said arms, as and for the purpose specified.

4. The combination with a double-chambered bellows, and a distributing-valve adapted to communicate with either chamber of said bellows and consisting of two disks, one of which is fixed and provided with a number of apertures, while the other is movable and provided with grooves to connect the apertures of the fixed disk, of a spindle for said movable disk, two arms mounted radially on said spindle, a spring engaged with one of said arms, and a link having a cam-slot to engage the other one of said arms to actuate the movable disk for reversing the distributing-valve at the end of each stroke of the bellows, substantially as described.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

EUGENE LOUIS DOYEN. Witnesses:

EDWARD P. MACLEAN, I-IIPPOLYTE J OTTE. 

